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 划痕检测,我这里用到的是Sobel算子和blob斑点匹配以及blob里面的形态学调整

Sobel 是一种在数字图像处理和计算机视觉领域广泛应用的算法，主要用于边缘检测

脚本展示 

#region namespace imports
using System;
using System.Collections;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using Cognex.VisionPro;
using Cognex.VisionPro.ToolBlock;
using Cognex.VisionPro3D;
using Cognex.VisionPro.ImageProcessing;
using Cognex.VisionPro.Blob;
#endregionpublic class CogToolBlockAdvancedScript : CogToolBlockAdvancedScriptBase
{#region Private Member Variablesprivate Cognex.VisionPro.ToolBlock.CogToolBlock mToolBlock;#endregionCogGraphicCollection dt = new CogGraphicCollection();/// <summary>/// Called when the parent tool is run./// Add code here to customize or replace the normal run behavior./// </summary>/// <param name="message">Sets the Message in the tool's RunStatus.</param>/// <param name="result">Sets the Result in the tool's RunStatus</param>/// <returns>True if the tool should run normally,///          False if GroupRun customizes run behavior</returns>public override bool GroupRun(ref string message, ref CogToolResultConstants result){// To let the execution stop in this script when a debugger is attached, uncomment the following lines.// #if DEBUG// if (System.Diagnostics.Debugger.IsAttached) System.Diagnostics.Debugger.Break();// #endifCogBlobTool blob = mToolBlock.Tools["CogBlobTool1"]as CogBlobTool;// Run each tool using the RunTool functionforeach(ICogTool tool in mToolBlock.Tools)mToolBlock.RunTool(tool, ref message, ref result);for(int i = 0;i < blob.Results.GetBlobs().Count;i++){double x = blob.Results.GetBlobs()[i].CenterOfMassX;double y = blob.Results.GetBlobs()[i].CenterOfMassY;dt.Add(Create(x, y));}return false;}private CogRectangleAffine Create(double x, double y){CogRectangleAffine tt = new CogRectangleAffine();tt.SideXLength = 8;tt.SideYLength = 14;tt.CenterX = x;tt.CenterY = y;tt.Color = CogColorConstants.Red;tt.LineWidthInScreenPixels = 4;return tt;}#region When the Current Run Record is Created/// <summary>/// Called when the current record may have changed and is being reconstructed/// </summary>/// <param name="currentRecord">/// The new currentRecord is available to be initialized or customized.</param>public override void ModifyCurrentRunRecord(Cognex.VisionPro.ICogRecord currentRecord){}#endregion#region When the Last Run Record is Created/// <summary>/// Called when the last run record may have changed and is being reconstructed/// </summary>/// <param name="lastRecord">/// The new last run record is available to be initialized or customized.</param>public override void ModifyLastRunRecord(Cognex.VisionPro.ICogRecord lastRecord){foreach(ICogGraphic s in dt){mToolBlock.AddGraphicToRunRecord(s, lastRecord, "CogSobelEdgeTool1.InputImage", "script");}}#endregion#region When the Script is Initialized/// <summary>/// Perform any initialization required by your script here/// </summary>/// <param name="host">The host tool</param>public override void Initialize(Cognex.VisionPro.ToolGroup.CogToolGroup host){// DO NOT REMOVE - Call the base class implementation first - DO NOT REMOVEbase.Initialize(host);// Store a local copy of the script hostthis.mToolBlock = ((Cognex.VisionPro.ToolBlock.CogToolBlock)(host));}#endregion}

 效果

下面的我们先用Pixel 通过直方图调节来突出边缘和表面特征

在通过调节二值化阈值等来突出

 脚本

#region namespace imports
using System;
using System.Collections;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using Cognex.VisionPro;
using Cognex.VisionPro.ToolBlock;
using Cognex.VisionPro3D;
using Cognex.VisionPro.PixelMap;
using Cognex.VisionPro.Blob;
#endregionpublic class CogToolBlockAdvancedScript : CogToolBlockAdvancedScriptBase
{#region Private Member Variablesprivate Cognex.VisionPro.ToolBlock.CogToolBlock mToolBlock;#endregionCogGraphicCollection dt = new CogGraphicCollection();CogPolygon polygon;/// <summary>/// Called when the parent tool is run./// Add code here to customize or replace the normal run behavior./// </summary>/// <param name="message">Sets the Message in the tool's RunStatus.</param>/// <param name="result">Sets the Result in the tool's RunStatus</param>/// <returns>True if the tool should run normally,///          False if GroupRun customizes run behavior</returns>public override bool GroupRun(ref string message, ref CogToolResultConstants result){// To let the execution stop in this script when a debugger is attached, uncomment the following lines.// #if DEBUG// if (System.Diagnostics.Debugger.IsAttached) System.Diagnostics.Debugger.Break();// #endifdt.Clear();CogBlobTool blob = mToolBlock.Tools["CogBlobTool1"]as CogBlobTool;// Run each tool using the RunTool functionforeach(ICogTool tool in mToolBlock.Tools)mToolBlock.RunTool(tool, ref message, ref result);for(int i = 0;i < blob.Results.GetBlobs().Count;i++){polygon = new CogPolygon();polygon = blob.Results.GetBlobs()[i].GetBoundary();polygon.Color = CogColorConstants.Red;dt.Add(polygon);}return false;}#region When the Current Run Record is Created/// <summary>/// Called when the current record may have changed and is being reconstructed/// </summary>/// <param name="currentRecord">/// The new currentRecord is available to be initialized or customized.</param>public override void ModifyCurrentRunRecord(Cognex.VisionPro.ICogRecord currentRecord){}#endregion#region When the Last Run Record is Created/// <summary>/// Called when the last run record may have changed and is being reconstructed/// </summary>/// <param name="lastRecord">/// The new last run record is available to be initialized or customized.</param>public override void ModifyLastRunRecord(Cognex.VisionPro.ICogRecord lastRecord){foreach(ICogGraphic s in dt){mToolBlock.AddGraphicToRunRecord(s, lastRecord, "CogPixelMapTool1.InputImage", "script");}}#endregion#region When the Script is Initialized/// <summary>/// Perform any initialization required by your script here/// </summary>/// <param name="host">The host tool</param>public override void Initialize(Cognex.VisionPro.ToolGroup.CogToolGroup host){// DO NOT REMOVE - Call the base class implementation first - DO NOT REMOVEbase.Initialize(host);// Store a local copy of the script hostthis.mToolBlock = ((Cognex.VisionPro.ToolBlock.CogToolBlock)(host));}#endregion}

效果

 

#region namespace imports
using System;
using System.Collections;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using Cognex.VisionPro;
using Cognex.VisionPro.ToolBlock;
using Cognex.VisionPro3D;
using Cognex.VisionPro.ImageProcessing;
using Cognex.VisionPro.PMAlign;
using Cognex.VisionPro.CalibFix;
using Cognex.VisionPro.PixelMap;
using Cognex.VisionPro.Blob;
#endregionpublic class CogToolBlockAdvancedScript : CogToolBlockAdvancedScriptBase
{#region Private Member Variablesprivate Cognex.VisionPro.ToolBlock.CogToolBlock mToolBlock;#endregionCogGraphicCollection dt = new CogGraphicCollection();CogGraphicLabel label = new CogGraphicLabel();/// <summary>/// Called when the parent tool is run./// Add code here to customize or replace the normal run behavior./// </summary>/// <param name="message">Sets the Message in the tool's RunStatus.</param>/// <param name="result">Sets the Result in the tool's RunStatus</param>/// <returns>True if the tool should run normally,///          False if GroupRun customizes run behavior</returns>public override bool GroupRun(ref string message, ref CogToolResultConstants result){// To let the execution stop in this script when a debugger is attached, uncomment the following lines.// #if DEBUG// if (System.Diagnostics.Debugger.IsAttached) System.Diagnostics.Debugger.Break();// #endifdt.Clear();CogBlobTool blob = mToolBlock.Tools["CogBlobTool1"]as CogBlobTool;CogPolarUnwrapTool polar = mToolBlock.Tools["CogPolarUnwrapTool1"]as CogPolarUnwrapTool;// Run each tool using the RunTool functionforeach(ICogTool tool in mToolBlock.Tools)mToolBlock.RunTool(tool, ref message, ref result);for(int i = 0;i < blob.Results.GetBlobs().Count;i++){double x = blob.Results.GetBlobs()[i].CenterOfMassX;double y = blob.Results.GetBlobs()[i].CenterOfMassY;double lastx,lasty;polar.RunParams.GetInputPointFromOutputPoint(polar.InputImage, polar.Region, x, y, out lastx, out lasty);dt.Add(CreateCircle(lastx, lasty));}if(blob.Results.GetBlobs().Count > 0){label.SetXYText(100, 100, "NG");label.Alignment = CogGraphicLabelAlignmentConstants.TopLeft;label.Font = new Font("楷体", 20);label.Color = CogColorConstants.Red;dt.Add(label);}else{label.SetXYText(100, 100, "Pass");label.Alignment = CogGraphicLabelAlignmentConstants.TopLeft;label.Font = new Font("楷体", 20);label.Color = CogColorConstants.Green;dt.Add(label);}return false;}private CogCircle CreateCircle(double x, double y){CogCircle co = new CogCircle();co.CenterX = x;co.CenterY = y;co.Radius = 30;co.Color = CogColorConstants.Red;co.LineWidthInScreenPixels = 6;return co;}#region When the Current Run Record is Created/// <summary>/// Called when the current record may have changed and is being reconstructed/// </summary>/// <param name="currentRecord">/// The new currentRecord is available to be initialized or customized.</param>public override void ModifyCurrentRunRecord(Cognex.VisionPro.ICogRecord currentRecord){}#endregion#region When the Last Run Record is Created/// <summary>/// Called when the last run record may have changed and is being reconstructed/// </summary>/// <param name="lastRecord">/// The new last run record is available to be initialized or customized.</param>public override void ModifyLastRunRecord(Cognex.VisionPro.ICogRecord lastRecord){foreach(ICogGraphic s in dt){mToolBlock.AddGraphicToRunRecord(s, lastRecord, "CogImageConvertTool1.InputImage", "");}}#endregion#region When the Script is Initialized/// <summary>/// Perform any initialization required by your script here/// </summary>/// <param name="host">The host tool</param>public override void Initialize(Cognex.VisionPro.ToolGroup.CogToolGroup host){// DO NOT REMOVE - Call the base class implementation first - DO NOT REMOVEbase.Initialize(host);// Store a local copy of the script hostthis.mToolBlock = ((Cognex.VisionPro.ToolBlock.CogToolBlock)(host));}#endregion}